Results 31 to 40 of about 48,477 (300)

Energy efficiency and transient-steady state performance comparison of a resistance infant incubator and an improved thermoelectric infant incubator

open access: yesEngineering Science and Technology, an International Journal, 2022
The present study aims to contribute energy related research by comparing thermal hydraulic performance parameters including energy consumptions, set temperature precisions and noise levels of newly improved thermoelectric infant incubator having ...
Osman Yeler, Mehmet Fevzi Koseoglu
doaj   +1 more source

Steady-state operation of spheromaks by inductive techniques [PDF]

open access: yes, 1984
A method to maintain a steady-state spheromak configuration inductively using the S-1 Spheromak device is described. The S-1 Spheromak formation apparatus can be utilized to inject magnetic helicity continuously (C.W., not pulsed or D.C.) into the ...
Janos, A., A. Janos
core   +1 more source

Steady-State Angle Stability Analysis of Parallel Grid-Forming Converters in Current Saturation Mode [PDF]

open access: yes, 2023
Grid-forming converters (GFCs) usually operate in parallel to supply power to unknown loads. Nevertheless, unknown loads may lead to overcurrent, causing parallel GFCs to enter the current saturation mode (CSM).
Liu, Hang   +11 more
core   +1 more source

Concurrent operation of 10 gyrotrons at W7-X experience and improvement opportunities

open access: yesEPJ Web of Conferences, 2018
At the stellarator Wendelstein 7-X (W7-X) Electron Cyclotron Resonance Heating (ECRH) is the main heating system for steady-state operation and was the only available heating system during the operation phase OP1.2a in 2017.
Braune H.   +11 more
doaj   +1 more source

Design and Stability Analysis Techniques for Switching-Mode Nonlinear Circuits: Power Amplifiers and Oscillators [PDF]

open access: yes, 2006
A design technique for kW level switching mode power amplifiers is presented. Several push pull pairs, independently tuned to Class E/Fodd, are combined by a distributed active transformer.
Jeon, Sanggeun
core   +1 more source

Analysis of the Dynamic Performance of Self-Excited Induction Generators Employed in Renewable Energy Generation [PDF]

open access: yes, 2014
Incentives, such as the Feed-in-tariff are expected to lead to continuous increase in the deployment of Small Scale Embedded Generation (SSEG) in the distribution network.
Farrag, Mohamed E.A.; id_orcid   +7 more
core   +1 more source

Simulation and experimental study of uniformity of temperature field of electrically heated water

open access: yesShenzhen Daxue xuebao. Ligong ban, 2022
With the aim of investigating the non-uniformity of the temperature field of electrically heated water in a horizontal stationary circular tube, we numerically simulated the axial and radial temperature fields in a horizontal circular tube using the ...
LI Xiongjun   +4 more
doaj   +1 more source

OPTIMIZATION OF QUASI-STEADY-STATE OPERATING MODES OF SYNCHRONOUS JET MOTORS WITH PERMANENT MAGNETS FOR ELECTRIC BUSES

open access: yesEnergy saving. Power engineering. Energy audit.
Abstract. The work created an algorithm for determining the optimal control parameters of a traction synchronous jet motor with permanent magnets based on the specified power supply conditions and rotation frequency. The dependences of the drive efficiency, the traction motor efficiency, the load angle and the modulation coefficient for their optimal ...
Khaustov, Оleksandr, Liubarskyi, Borys
  +9 more sources

Steady-state Optimization of Complex System Operating Parameters Based on Association Rules

open access: yesZhileng xuebao, 2021
To address the problem of unstable system operation caused by the jump of the target value of system operation parameters in the process of working condition switching, a steady-state optimization method of variable working condition operation parameters
Yan Junwei   +4 more
doaj  

The Complex Way to Laser Diode Spectra: Example of an External Cavity Laser With Strong Optical Feedback [PDF]

open access: yes, 2005
An external cavity laser with strong grating-filtered feedback to an antireflection-coated facet is studied with a time-domain integral equation for the electric field, which reproduces the modes of the oscillation condition as steady-state solutions ...
B. TROMBORG   +4 more
core   +1 more source

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